Hydraulic transmission mechanism



June l0,= 1930. w. E. PARKER 1,763,565

HYDRAULIC TRANSMISSION MECHANISM 3 Filed Dec. 21, 1925 4 Shee ts-She'et 1 V f i- W- inn-mass:

June 10, 1930. w. E. PARKER. I

HYDRAULIC TRANSMISSION MECHANISM 4 Sheets-Sheet 2 Filed Dec. 21, 1925 v'llllHl IHHIII 12K E. PM We?" ATTORNEY WITNESS:

J v w. E. PARKER 1,763,565

HYDRAULIC TRANSMISSIQN MECHANISM Filed Dec. 21, 1925 4 sheets-sheet s WW- v WITNESS:

June 10, 1930.

w. E. PARKER 1,763,565

HYDRAULIC TRANSMISSION MECHANISM Filed 1925 4 Sheets-Sheet 4 ,Z E. Few We?" INVENTOR ATTORN EY Patented June 10, 193

PATENT OFFICE.

WI LLIAM E. PARKER, F PHILADELPHIA, PENNSYLVANIA HYDRAULIC vTBANSTLAZIS SION MECHANISM Application filed December 21, 1925. Serial No. 76,937.

The object of this invention is to provide a hydraulic transmission system for motor cars and the like, by the use of which a clutch of the type usually employed is rendered unnecessary, and the gear shifting device and diflerential may be eliminated.

A further object is to provide pumping mechanism directly associated with the fly wheel of the en ine.

having a chamber therein, within which pistons are mounted, these pistons and their cylinders radiating from a common point, and the piston being controlled by the degree of eccentricity of a device within the fly wheel housing and mounted in the manner indicated below.

A further object is to provide special cmtrolling means in the transmission pipe line.

Wi h the foregoing and other objects in view, he invention consists in the novel comhination and arrangement of elements de-,

scribed, illustrated and claimed, it being understood that changes may be made Within the scope of the claim Without departing from the spirit of the invention. 3

In the drawing formingpart of this up plication:

Figure 1' is a plan View showing an engine conventionally, and showing a rear axle and rear wheelsof a motor car. 1

Figure 2 is a section on the line 2.-2 of Figure 3.

Figure 3 is a section on the line 3-3 of Figure '1.

Figure 4 is a section on the line 1-4 of Fi ure 3.

Figure 5 is a section on line 5-5 of Figure 3.

Figures 6, 7 and 8, show difl'erent positions of a controlling element to be connected withthe pipe line between the pumping apparatus and the motor for the wheels.

Figure 9 is a side view of the controlling valve per se, torming part of the controlling device.

in Figure 1, the reference character 10 indicates an engine, which is shown conventionally, and a fly wheelie designated 11,

50 this fly wheel having the construction shown A further obJect is to provide a fly wheel in section in Figure 4 and elsewhere and be-- ing mounted in housing 11'. A rear axle designated 12 mounts wheels 13 and 14, and the casings of motors for the individual wheels 13 and 14 are shown at 13 and 14. Extending between the housings or casings 13- and 14 are pipes 15 and 16, and the formerhas communication with the pipe 17 connected with the housing of thefly wheel, at the point 17 as illustrated in F igure 4. The pipe 16 is in communication with the pipe 18 which has connection with the housing of the fly wheel at the point 18. I

Figure 1 further shows means for controlling the degree of eccentricity of an element of the pumping apparatus. in this construction, a lever 20 is provided with an engaging element 21 for cooperation with a segment 22, the lever being rigid with a shaft 25, illustrated in Figure 5. 79

Shaft 25 carries arms 26, and carried by these arms are .racks 27 cooperating with racks 28 on slidable element 30 mounting axial member 31, the latter being divided into. longitudinal portions by wall 32. Guides 29 75 are provided for slida'ble element 30, and upon the operation of lever 20 and element 30, the axial member 31 may be shifted to an eccentric position with referenceto fly wheel 11, and may be shifted from one sideofthe center to the other side, in an obvious manner, when reversing the direction of drive.

The fly wheel 11 includes an outer flange provided with a groove 40 having a reduced entrance portion ll, and within the groove the socket members d2 are movable, these socket members receiving the rounded ends 37 of piston rods 37. The cylinders 35 have communication with ports dd leading through passages and 46 to channels 47 and 48 in element 31, the channels being in communication with pipes 17 and 18 of Figures 1 and d. At a given time, the pistons 36 have the relative position shown in Figure 2, in view of the eccentric position of element 31, and oil or other fluid is pumped to the motors ot the individual wheels'lfi-and 1d, and is returned from said motors to the pumping apparatus, completing a circuit. it controlling valve is operated by a lever 50, the engaging elements of which cooperate with segment 51, the lever moving an arm 52 and a rod 53 connected at 54 with the valve 55. This valve is provided With passages 56 and 57, the latter being of angular form, and the varied positions assumed by the valve in the operationof the device are show in Figures 6, 7 and 8, the valve per so being shown in elevation in Figure 9.

Figure 6 shows the relative position of the elements when transmitting fluid for power purposes, and in Figure 7 the position necessary for by-passing the pump and motors, is illustrated. Figure 8 shows the flow of oil cut oil, for braking purposes.

lVhat is claimed is: I

In a device of the class described, alious ing one Wall of which is provided with ports, guides carried by the inner surface of the Wall, a body slidable in the guides and having ports for the distribution of fluid through the ports first named, a plurality of pipes for conducting fluid in opposite directions, a valve casing carried by said wall and in communication with the pipes, and a slide valve operable separately from the body and within the valve casing, this valve having a port for placing the pipes in communication simultaneously with the ports of the body, the valve having other ports for placing the pipes in communication individually with the ports of the body.

In testimony whereof I afi'ix in" signature WILLIAM E. PA KER. 

